Malignant neoplasm of ovrlp sites of right bronchus and lung

This code signifies a primary cancerous tumor that spans across multiple contiguous anatomical subdivisions within the right bronchus and lung, where the origin cannot be assigned to a single specific site. It indicates a malignancy affecting overlapping regions of the right lung's airways and parenchymal tissue.

Apply this code when medical record documentation clearly states a malignant neoplasm involving overlapping sites of the right bronchus and lung, such as a tumor extending from the main bronchus into an adjacent lobe. This code is appropriate when the exact primary sub-site within the right lung or bronchus cannot be precisely localized due to the tumor's extensive spread across boundaries.

• Ensure documentation explicitly states "overlapping sites" or describes involvement of multiple contiguous right bronchopulmonary structures.
• Do not use if the tumor is confined to a single lobe, bronchus, or other specific site within the right lung; instead, code to the specific anatomical location.
• Always sequence this code as the primary diagnosis when it represents the reason for the encounter or treatment.